S
M
T
W
T
F
S
26
79°
57°
27
78°
56°
28
76°
56°
29
72°
55°
30
70°
56°
1
72°
57°
2
70°
56°
3
71°
57°
4
72°
58°
5
75°
57°
6
75°
58°
7
78°
59°
8
79°
60°
9
79°
60°
10
78°
59°
11
79°
60°
12
80°
60°
13
81°
61°
14
81°
61°
15
78°
59°
16
78°
58°
17
80°
60°
18
83°
59°
19
84°
55°
20
79°
56°
21
78°
58°
22
79°
64°
23
85°
63°
24
87°
65°
25
87°
65°
26
86°
64°
27
88°
66°
28
89°
66°
29
88°
65°
30
88°
61°
31
87°
62°
1
85°
66°
2
90°
67°
3
90°
66°
4
91°
68°
5
92°
64°
6
91°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Poteau
Poteau's May 2026 forecast shows daily high temperatures ranging from 70° to 92°, with overnight lows between 55° and 68°. The average high for May is 81° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Poteau. See also: June | July | August.